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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/device-configuration-via-udev.dox | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/doc/device-configuration-via-udev.dox b/doc/device-configuration-via-udev.dox index 85c5c9c9..6e9a3dc0 100644 --- a/doc/device-configuration-via-udev.dox +++ b/doc/device-configuration-via-udev.dox @@ -117,4 +117,22 @@ defaults or any other reason. The effects of setting these properties, the format of the property and the value of the property are subject to change at any time. +@subsection model_specific_configuration_x220fw81 Lenovo x220 with touchpad firmware v8.1 + +The property <b>LIBINPUT_MODEL_LENOVO_X220_TOUCHPAD_FW81</b> may be set by a +user in a local hwdb file. This property designates the touchpad on a Lenovo +x220 with a touchpad firmware version 8.1. When this firmware version is +installed, the touchpad is imprecise. The touchpad device does not send +continuos x/y axis position updates, a behavior also observed on its +successor model, the Lenovo x230 which has the same firmware version. If the +above property is set, libinput adjusts its behavior to better suit this +particular model. + +The touchpad firmware version cannot be detected automatically by libinput, +local configuration is required to set this property. Refer to the libinput +model quirks hwdb for instructions. + +This property must not be used for any other purpose, no specific behavior +is guaranteed. + */ |